Road chair



June 21, 1932. H. w. NESTER 1,863,581

ROAD CHAIR Filed Oct. 20, 1930 2 Sheets-Sheet l June 21, 1932. w NEST-ER1,863,581

ROAD CHAIR Filed Oct. 20, 1930 2 SheetsSheet 2 MM; Y

Patented June 21 1932 a.

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Hownanw. NESTER,"OFWGROESTER, erassnczrnsnrrs, ASSIGHOR- TO PARKER WIRE'GOODS COMPANY, or wononsrna, MASSACHUSETTS, A CORPORATION orivmssnonn-SETTS ROAD CHAIR Application filed October 20, 1930. Serial No. 489,726.

This invention relates to devices for positioning reenforcing rods ormats in a concrete structure and for definitely spacing such rods ormats from a supporting surface.

' The invention is particularly designed for use in concrete roadconstruction, in which reenforcing rods or mats are commonly used in theslab or layer of concrete constituting the road bed.

" It is the general object of my invention to provide an improved roadchair for such purposes and particularly to provide a road chair whichwill have an extended area of contact with the supporting surface, suchas the subgrade of a concrete road.

My invention further relates to arrange ments and combinations of partswhich will be hereinafter described and more particular 1y pointed outin the appended claims.

Two forms of the invention are shown in the drawings, in which Fig. 1discloses the invention applied to a road chair designed to support asingle mat or layer of reenforcing rods;

Fig. 2 is a side elevation of the construction shown in Fig. 1;

Fig. 3 is a sectional plan view, taken along the line 33 in Fig. 2;

. Fig. 4 is an end view. looking in the direction of the arrow 4 in Fig.2;

Fig. 5 is a perspective View showing my invention embodied in aconstruction de' signed to support two layers of reenforcing rods inspaced relation from a supporting surface and from each other;

Fig. 6 is a side elevation of the construction shown in Fig. 5;

Fig. 7 is an end view, looking in the direction of the arrow 7 in Fig.6; and

Fig. 8 is a sectional plan view, taken along the line 8-8 of Fig. 6.

Referring first to Figs. 1 to 4, I have shown my improved road chair ascomprising a continuous piece of wire WV, bent to a desired shape andmounted upon a flat disc or plate 10. The wire W comprises an uprightmember 12 which is bent laterally at its lower end,

as indicated at 13, to provide a foot portion adapted to be spot-weldedor otherwise perm manently secured to the plate 10.

, The upperpart ofthe upright portion 12 is also bent laterally, asindicated at 15 (Fig. 1), and'isthen bent downward and furtherextendedlaterally at 16, after which itis bent rearward and upward, as indicatedat 17.

The rear end-of the portion 17 is then bent sharply upward to formanupper loop 18, then downward to form a lower transverse loop 19, andagain upward to form a second upper loop 20.

My. improved road chair is shown in assembled relation with a pair ofreenforcing rods A and 'B in Fig. 1. The upper rod B extends undertheloops 18 and 20 and overlies the rod A which extends through thetransverse loop 19-and rests upon the offset portion 16 previouslydescribed.

The rods A and B are thus firmly secured in position and are alsodefinitelyv spaced from the surface engagedby the disc or plate 10. Thedisc 10 provides an extended area of contact with the supporting surfaceso that the vertical position of the reenforcing mat is not effected byslight irregularities in the sub-grade. Furthermore, the device takesthe place of the usual tie clip, otherwise used.

In Figs. 5 to 8,1 have shown my improvements embodied in a road chairadapted to receive and position two spaced layers of reenforcing rods ormats. In this construction also each improved road chair comprises apiece of wire X anda plate or disc 30. The wire X has an upright portion.31 offset at 32, to provide a seat for a lower re'enforcing rod At itslower end, the upright portion 31 is bent laterally,-as indicated at 33,and this portion 33 is permanently secured to the disc or plate in anysuitable manner, as by spot-welding.

At its upper'end, the upright portion 31 is providedwith an upper loop36, a transverse lower loop 87, and a second upper loop 38, which latterloop in the usual construction may be left incomplete.

The end of the lower offset portion 33 is reversely bent, as indicatedat 10 (Fig. 8), and is extendedrearward and upward, as indicated-M41 6)the extreme rear end of the-portion 41 being provided with, a

transversely and downwardly directed hooklike end 42.

In the drawings, I have shown this form of my improved chair assembledwith lower reenforcing rods C, D, and upper rods E and F. The lower rodC rests in the offset por tion 32, as previously stated, and supportsthe second rod D of the lower reenforcing layer. The rearwardly extendedhook-like iortion 4 2 overlies the rod C as indicated in Fig. 5, andprevents rocking of the chair in one direction. The rods G and D arepreferably held in assembled relation with the road chair by a tie clipT, which may be of a usual commercial construction.

The rod E of the upper r eenforcing structure is supported by thetransverse loop 37 and in turn supports the upper rod F which underliesthe loops 36 and 38. While the rearwardly extended portion 42 preventsrocking of the road chair in one direction, it will be noted that thetransverse loop 37 similarly prevents rocking of the chair in W theopposite direction.

The rearwardly bent portion is pref- I erably slightly inclined upwardlyand spaced from the disc 30, as indicated in Fig. 6, so as to provideincreased resilience for the rearwardly extended member comprising theparts 40, ll and 42. 1

\Vith this form of the invention, as in that previously described, theplate or disc 30 provides an extended area of contact with the sub-gradeor supporting surface, andac- 5 curate spacing of the reenforcing matsfrom the supporting surface is facilitated.

Having thus described my invention and the advantages thereof, I do notwish to be 7 limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is 1. A road chair comprisinga substantially flat sheet metal base of extended area and a singlepiece of wire having a foot portion permanently and rigidly secured tosaid base,

said wire extending upwardly from said base and having portions bent toengage and position a plurality of reenforcing members supportedthereby.

2. A road chair comprising a substantially flat sheet metal base ofextended area and a single piece of wire having a foot portionpermanently and rigidly secured to said base, said wire extendingupwardly from said base and having portions bent to engage'andposiengage and position a plurality of reenforcing members supportedthereby, and said wire at the opposite end of said foot ortion beingbent rearwardly and upwar l and being provided with an ofiset hook aapted to overlie one of said reenforcing members and to thereby preventrocking of the road chair in one direction.

In testimony whereof I have hereunto affixed my signature.

HOWARD W. NESTER.

